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1. (WO2018105993) RECOVERY METHOD FOR (METH)ACRYLIC ACID

Pub. No.:    WO/2018/105993    International Application No.:    PCT/KR2017/014152
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Wed Dec 06 00:59:59 CET 2017
IPC: C07C 51/42
C07C 57/04
B01D 53/14
Applicants: LG CHEM, LTD.
주식회사 엘지화학
Inventors: SONG, Jong Hun
송종훈
BAEK, Se Won
백세원
MIN, Yoon Jae
민윤재
KIM, Jae Yul
김재율
Title: RECOVERY METHOD FOR (METH)ACRYLIC ACID
Abstract:
The present invention relates to a recovery method for (meth)acrylic acid and an apparatus used in the recovery method. In the recovery method for (meth)acrylic acid according to the present invention, (meth)acrylic acid aqueous solutions having different concentrations are separately discharged from (meth)acyclic acid absorption tower, and in a step for extracting (meth)acrylic acid, a high recovery rate of (meth)acrylic acid can be secured by using a particular proportion of extraction solvent, and purification energy costs can be greatly reduced, so that the recovery of (meth)acrylic acid and the operation of continuous processes can be allowed.